In addition to the basic results, the hotspot and jdk regression test suites were rerun with assertions and system assertions enabled, -ea -esa. (The langtools tests are already run with assertions enabled.)
The results for hotspot were identical to running without assertions; in jdk a few additional tests failed:

The test in question is relying on "http://foo.bar.baz" being a bad URL. The test may be failing on my machine due to my ISP's "helpful" behavior of providing a page for a missing URL. I see the same test fail on my laptop when running JDK 7, but the test passes with both OpenJDK 6 and JDK 7 when I disable networking on the box.

In general, unfortunately there can be transient failures on some of the jdk repository's regression tests. There has been some work making those tests more robust for JDK 7, as well as correcting some buggy tests, but not all those changes have been ported to OpenJDK 6.